Revivalism and Social Transformations in Islamic HistoryVOLL, J. O.The Muslim world (Hartford). 1986, Vol 76, Num 3-4, pp 168-180, issn 0027-4909Article

Imperialism, nationalism and missionaries : lessons from Sudan for the twenty-first century = Impérialisme, nationalisme et missionnaires: les leçons du Soudan pour le XXI^e siècleVOLL, J. O.Islam and Christian-Muslim relations. 1997, Vol 8, Num 1, pp 39-52, issn 0959-6410Article

The Mahdi's Concept and Use of HijrahVOLL, J. O.Islamic Studies. 1987, Vol 26, Num 1, pp 31-42Article

Wahhabism and Mahdism: Alternative Styles of Islamic RenewalsVOLL, J. O.Arab Studies Quarterly New York, N. Y. 1982, Vol 4, Num 1-2, pp 110-126Article

Renewal and reformation in the mid-twentieth century : Bediuzzaman Said Nursi and religion in the 1950sVOLL, J. O.The Muslim world (Hartford). 1999, Vol 89, Num 3-4, pp 245-259, issn 0027-4909Article